Heaters Just Won't Stop Turning Off?

[chairman]

To calculate load, add the wattage that the thermostat uses (probably very low) and the maximum wattage that all your heat sources could draw at 100% power. This might slightly over estimate your load but it is safer to err in that direction.

I control my space heaters using a baseboard heater thermostat. I wired up a stand-alone power supply but an electrician could put one in a wall for you to control an outlet.